/*!	 layer_polygon.h
**	 Header file for implementation of the "Polygon" layer
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2011-2013 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_LAYER_POLYGON_H
#define __SYNFIG_LAYER_POLYGON_H

#include "layer_shape.h"
#include <synfig/color.h>
#include <synfig/vector.h>
#include <list>
#include <vector>

namespace synfig
{

/*!	\class Layer_Polygon
**	 writeme
**	TODO:  This layer needs to support multiple polygons */
class Layer_Polygon : public Layer_Shape
{
    SYNFIG_LAYER_MODULE_EXT

private:

    // Parameter: (std::vector<Point>)
    ValueBase param_vector_list;

protected:

    Layer_Polygon();

public:

    ~Layer_Polygon();

protected:
    // Adds a polygon to the layer
    /*!	The edge data is automatically added to the
    **	EdgeTable, so there is no need to call sync()
    **	after adding a polygon using this function.
    **	\param point_list A list containing the
    **		points that define the polygon's parameter.
    */
    void add_polygon(const std::vector<Point> &point_list);

    // Places the point_list on the vector_list, for later render as polygon.
    void set_stored_polygon(const std::vector<Point> &point_list);

    // Clears out any polygon data
    void clear_stored_polygon();

public:
    virtual bool set_param(const String & param, const synfig::ValueBase &value);
    virtual ValueBase get_param(const String & param)const;
    virtual Vocab get_param_vocab()const;

private:
    class 		PolySpan;
    bool render_polyspan(Surface *surface, PolySpan &polyspan)const;
}; // END of Layer_Polygon

}; // END of namespace synfig

#endif